Struct getrandom::Error [−][src]
A small and no_std
compatible error type
The Error::raw_os_error()
will indicate if the error is from the OS, and
if so, which error code the OS gave the application. If such an error is
encountered, please consult with your system documentation.
Internally this type is a NonZeroU32, with certain values reserved for
certain purposes, see Error::INTERNAL_START
and Error::CUSTOM_START
.
If this crate’s "std"
Cargo feature is enabled, then:
getrandom::Error
implementsstd::error::Error
std::io::Error
implementsFrom<getrandom::Error>
.
Implementations
impl Error
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pub const UNSUPPORTED: Error
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This target/platform is not supported by getrandom
.
pub const ERRNO_NOT_POSITIVE: Error
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The platform-specific errno
returned a non-positive value.
pub const IOS_SEC_RANDOM: Error
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Call to iOS SecRandomCopyBytes
failed.
pub const WINDOWS_RTL_GEN_RANDOM: Error
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Call to Windows RtlGenRandom
failed.
pub const FAILED_RDRAND: Error
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RDRAND instruction failed due to a hardware issue.
pub const NO_RDRAND: Error
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RDRAND instruction unsupported on this target.
pub const WEB_CRYPTO: Error
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The browser does not have support for self.crypto
.
pub const WEB_GET_RANDOM_VALUES: Error
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The browser does not have support for crypto.getRandomValues
.
pub const VXWORKS_RAND_SECURE: Error
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On VxWorks, call to randSecure
failed (random number generator is not yet initialized).
pub const NODE_CRYPTO: Error
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NodeJS does not have support for the crypto
module.
pub const NODE_RANDOM_FILL_SYNC: Error
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NodeJS does not have support for crypto.randomFillSync
.
pub const INTERNAL_START: u32
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Codes below this point represent OS Errors (i.e. positive i32 values).
Codes at or above this point, but below Error::CUSTOM_START
are
reserved for use by the rand
and getrandom
crates.
pub const CUSTOM_START: u32
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Codes at or above this point can be used by users to define their own custom errors.
pub fn raw_os_error(self) -> Option<i32>
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Extract the raw OS error code (if this error came from the OS)
This method is identical to std::io::Error::raw_os_error()
, except
that it works in no_std
contexts. If this method returns None
, the
error value can still be formatted via the Display
implementation.
pub const fn code(self) -> NonZeroU32
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Extract the bare error code.
This code can either come from the underlying OS, or be a custom error.
Use Error::raw_os_error()
to disambiguate.
Trait Implementations
impl Clone for Error
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impl Copy for Error
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impl Debug for Error
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impl Display for Error
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impl Eq for Error
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impl Error for Error
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pub fn source(&self) -> Option<&(dyn Error + 'static)>
1.30.0[src]
pub fn backtrace(&self) -> Option<&Backtrace>
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pub fn description(&self) -> &str
1.0.0[src]
pub fn cause(&self) -> Option<&dyn Error>
1.0.0[src]
impl From<Error> for Error
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impl From<NonZeroU32> for Error
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fn from(code: NonZeroU32) -> Self
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impl PartialEq<Error> for Error
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impl StructuralEq for Error
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impl StructuralPartialEq for Error
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Auto Trait Implementations
impl RefUnwindSafe for Error
impl Send for Error
impl Sync for Error
impl Unpin for Error
impl UnwindSafe for Error
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut T
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
pub fn to_owned(&self) -> T
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pub fn clone_into(&self, target: &mut T)
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impl<T> ToString for T where
T: Display + ?Sized,
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T: Display + ?Sized,
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,